On Wed, Jul 22, 2020 at 2:21 PM kernel test robot <lkp@xxxxxxxxx> wrote: > > tree: git://git.kernel.org/pub/scm/linux/kernel/git/song/md.git md-next > head: fe630de009d0729584d79c78f43121e07c745fdc > commit: e236858243d7a8e0ac60972d2f9522146088a736 [9/14] md/raid5: set default stripe_size as 4096 > config: m68k-sun3_defconfig (attached as .config) > compiler: m68k-linux-gcc (GCC) 9.3.0 > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout e236858243d7a8e0ac60972d2f9522146088a736 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>, old ones prefixed by <<): > > >> ERROR: modpost: "__udivdi3" [drivers/md/raid456.ko] undefined! Yufen, could you please look into this one? I guess it is caused by ilog2(). Thanks, Song